Contact Us

Contact Us about Safe-Guard

Have a question about Safe-Guard (fenbendazole) cattle deworming products? Prevention or management? Then contact us using the following form. We’ll get back to you as quickly as possible. Thank you!


Merck Animal Health
10488 S. 136th St
Omaha, NE 68138
1.800.521.5767
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Are you a producer or veterinarian?


If you are a producer, how would you describe your operation? (Check one.)
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Please add a detailed message if there is other, specific, information you would like to receive.

Check here if you would like a Merck Animal Health representative to contact you.



To report an adverse reaction, product-related problem, or human exposure, please call Merck Animal Health Technical Services:

  • 800-224-5318 Companion Animal (Dogs, Cats, Horses)
  • 800-211-3573 Livestock & Aquaculture (Cattle, Swine, Dairy)
  • 800-219-9286 Poultry

Normal business hours are 8:30 am to 5:00 pm EST.

For after-hours emergencies, please call the numbers shown above. A recorded message will provide the telephone numbers for emergency support services if immediate assistance is needed.


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